I was just about to post the exact same thing....I'm interested in trying out the Ergo baby carrier, too. I saw a lady at Costco in Bend, Oregon who had one, and she just RAVED about it. She said it was best for a slightly bigger infant (4 months+) and great for toddlers.
Anyhow, rather than posting my own "ISO", I'll tag along to this one and bump it. I'm not in any huge hurry for one, as my new dd isn't due for 5 weeks.
Just thought I'd start looking now, in case it takes a while.